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Article: Dislocation junctions as barriers to threading dislocation migration

TitleDislocation junctions as barriers to threading dislocation migration
Authors
Issue Date2007
Citation
Applied Physics Letters, 2007, v. 90, n. 1, article no. 011905 How to Cite?
AbstractLevel set simulations of dislocation dynamics in biaxially strained, heteroepitaxial films reveal interesting kinetic and thermodynamic mechanisms for blocking the migration of threading dislocations. Two dislocations on the same or on intersecting slip planes may react to form a threading dislocation segment that does not glide under the influence of the misfit strain. In the coplanar case, a kinetic barrier exists that slows down dislocation migration. For the reaction involving dislocations on intersecting planes, an energetic barrier impedes other advancing dislocations. These barriers create significant and frequent impediment to threading dislocation flow, resulting in pileups and high threading dislocation densities. © 2007 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/303293
ISSN
2023 Impact Factor: 3.5
2023 SCImago Journal Rankings: 0.976
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQuek, Siu Sin-
dc.contributor.authorWu, Zhaoxuan-
dc.contributor.authorZhang, Yong Wei-
dc.contributor.authorXiang, Yang-
dc.contributor.authorSrolovitz, David J.-
dc.date.accessioned2021-09-15T08:25:01Z-
dc.date.available2021-09-15T08:25:01Z-
dc.date.issued2007-
dc.identifier.citationApplied Physics Letters, 2007, v. 90, n. 1, article no. 011905-
dc.identifier.issn0003-6951-
dc.identifier.urihttp://hdl.handle.net/10722/303293-
dc.description.abstractLevel set simulations of dislocation dynamics in biaxially strained, heteroepitaxial films reveal interesting kinetic and thermodynamic mechanisms for blocking the migration of threading dislocations. Two dislocations on the same or on intersecting slip planes may react to form a threading dislocation segment that does not glide under the influence of the misfit strain. In the coplanar case, a kinetic barrier exists that slows down dislocation migration. For the reaction involving dislocations on intersecting planes, an energetic barrier impedes other advancing dislocations. These barriers create significant and frequent impediment to threading dislocation flow, resulting in pileups and high threading dislocation densities. © 2007 American Institute of Physics.-
dc.languageeng-
dc.relation.ispartofApplied Physics Letters-
dc.titleDislocation junctions as barriers to threading dislocation migration-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1063/1.2426971-
dc.identifier.scopuseid_2-s2.0-33846129447-
dc.identifier.volume90-
dc.identifier.issue1-
dc.identifier.spagearticle no. 011905-
dc.identifier.epagearticle no. 011905-
dc.identifier.isiWOS:000243379900027-

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